Ostium paused trading after blockchain security firms reported an apparent exploit of its OLP vault, adding to a wave of high-profile DeFi security incidents.

Hackers manipulated the Ostium price feed by compromising an oracle signer key, allowing them to drain roughly $18 million from the exchange.

A hacker used Ostium's own price-reporting infrastructure against the protocol, submitting falsified future-dated oracle data to manufacture fake trading profits and trigger an…